diff --git a/boards/posix/nrf52_bsim/board_soc.h b/boards/posix/nrf52_bsim/board_soc.h
index bba01937dd7..3ea35cdb6c1 100644
--- a/boards/posix/nrf52_bsim/board_soc.h
+++ b/boards/posix/nrf52_bsim/board_soc.h
@@ -29,6 +29,7 @@
 #include "irq.h"
 #include "irq_sources.h"
 #include "NRF_regs.h"
+#include "cmsis.h"
 #include "nrf_soc_if.h"
 
 #define OFFLOAD_SW_IRQ SWI0_EGU0_IRQn
diff --git a/boards/posix/nrf52_bsim/cmsis.h b/boards/posix/nrf52_bsim/cmsis.h
new file mode 100644
index 00000000000..1b1c60f7e47
--- /dev/null
+++ b/boards/posix/nrf52_bsim/cmsis.h
@@ -0,0 +1,26 @@
+/*
+ * Copyright (c) 2020 Oticon A/S
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/**
+ * This header defines replacements for inline
+ * ARM Cortex-M CMSIS intrinsics.
+ */
+
+#ifndef BOARDS_POSIX_NRF52_BSIM_CMSIS_H
+#define BOARDS_POSIX_NRF52_BSIM_CMSIS_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Implement ARM Data Synchronization Barrier instruction as no-op. */
+static inline void __DSB(void) {}
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* BOARDS_POSIX_NRF52_BSIM_CMSIS_H */